Improvement in oscillating printing-presses



W. C. EVANS.

OSCILLATING PRINTING-PRESS.

No. 169,53Z. Patenta& Nov. 2,1875.

UNITED STATES PATENT OFFICE WILLIAM C. EVANS, OF PHILADELPHIA,PENNSYLVANIA IMPROVEMENT IN OSCILLATING PRlNTlNG-PRESSES.

Speeification forming part of Letters Patent No. 39,532, dated November2, 1875; application filed July 14, 1875.

To all whom it moyconcern:

Be it known that I, WILLIAM G. EvANs, of Philadelphia, Pennsylvania,have invented certain Improvements in Printing Presses, of

which the following is a specification:

My invention relates to that class of printin g-presses in which avertical or inclined bed is combined with a hinged platen; and theobject of my invention is Simplicity and economy of Construction-anobject attained in the :manner which I Will now proceed to describe,reference being had to the accompanying drawing, in which- Figure lis aside view ot' a printing-press with my improvements Fig. 2, a verticalseotion, and Fig. 3 a perspective view of parts of'the press. 4

A represents one of the two opposite side frames of the press; B, thebed, and D the platen, the latter being Secured to or formin g part ofarms M, which are hinged at m to the frame of the press. To suitablebearings in the opposite frames is adapted the shaft b, and to each endof this shaft is Secured an arm, e,'each arm being connected by a rod,f, to a pin, n, on the platen, to which the desired vibrating motion canbe imparted either by the vibration or rotation of the said shaft b. Twoarms, F, carrying the inking-rollers, are hung loosely to the shaft b,each arm being connected by a rod, d, to apin, n, of the platen, so thatthe latter, when the press is in opera` tion. imparts the desiredvibratin g movement to the said roller-carrying arms.

It will be evident to those familiar with the constructiou ofprinting-presses of the class to which my invention relates that, bymaking the shaft b available as a medium for carrying the roller-arms F,Simplicity and econinvention has to be operated by hand the shaft b maybe provided with a suitable lever and handle, by manipulating which avibrating motion may be imparted to the said shaft; but forpower-presses I use a supplementary driving-shaft, i, carrying a pinion,h, which gears into a wheel, p, on the shaft b.

I do not de'sire to claim, broadly, a printingpress in which a hingedplaten is connected to cranks on the driving-shat't, and also to aninking-frame hung to the said shaft; but

I claim as my invention- The combination of the shaft b, having crankse, connected to a pin, n, on the hinged platen D, with theinking-frameF, hung loosely to the shaft d, and connected to the said pin n of thehinged platen, all as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

W. U. EVANS.

Witnesses:

EDWARD H. ECKFELDT, HARRY SMITH.

